Folding exercise bike



FIG. 1 is a rear, right perspective view of a folding exercise bike of our new design;

FIG. 2 is a front view thereof.

FIG. 3 is a rear view thereof.

FIG. 4 is a left view thereof.

FIG. 5 is a right view thereof.

FIG. 6 is a top view thereof.

FIG. 7 is rear, right perspective view of the folding exercise bike in a collapsed configuration; and,

FIG. 8 is a rear, right perspective view of the folding exercise bike in a folded configuration.

Broken lines of equal length (e.g., dash-dash) represent unclaimed subject matter and form no part of the claimed design. 

CLAIM The ornamental design for a folding exercise bike, as shown and described. 